Some of the Truck Hardware mud flaps need to have a bracket installed prior to mounting the mudflap. Below are the instructions for installing the front brackets and mud flaps on GMC Sierra 1500 or Chevrolet Silverado 1500. The product part # is GB756681 and is availabe at SharpTruck.com.
The manufacturer is not responsible for negligent use of vehicle with mud flaps installed, including over-tightening of screws and bolts causing damage to vehicle or mud flaps.
For ease of installation, it is suggested that the wheel be removed
Check all fasteners for tightness. Repeat procedure on the other side.